A mythical creature, who is a giant penis, wearing a clown costume. This giant penis roams around frequently in mystery books, and is seen once in every episode of Scooby Doo, including Whats New Scooby Doo? Has been sighted many times in real life, where the Jizz Clown attacked the surveyor and jizzed on their face.

Jim: Hey did you see the giant Jizz Clown at the mall last week?
Todd: Yeah, I saw him in the bathroom. I asked what a giant penis was doing in there and he jizzed all over my face!
Robert: That sounds delicious!